I think it would be great idea to implement such achievement to reduce wow-inflation significantly. At the moment the only way to 'exclude' some money from internal turnover is Sand Drake (you are spending money to vendor mats, so they are 'wasted' and not coming back). According to current AH prices for new weapons and FL loot, average cash player owns is like 200-300k - and it will grow up while doing FL dailies. So I am sure 'Millionaire'-achievement would lower prices twice and let them grow not that fast.

omg...i made 49k in 1 month...but over 700?!?! auction house auction house

The golds easy if you dominate a couple of markets. I think at my prime it was 70% of inscription, 30% of enchantments, 30% of gems being bought off of AH were mine. Easy 30k+ a day . But took so much work (3-4 hours) to maintain it.

I don't want people to know how much money I have. Like in real life, it's a private matter. The achievement flashing in the guild chat and being displayed in the armory profile would tell everyone how wealthy I exactly was.

Professional jewelcrafter, alchemist, scribe, tailor and enchanter. Glad to help, but also wish that people learned to use search engines.
Passionate Guild Wars fan since 2005. Waiting Guild Wars 2 excitedly since Eye of the North, 2007. Still a little bit of waiting to go! =)

it's a good idea, but i dont think that rewarding it for HAVING 1million is right. i mean, as someone said, its a hack me/ask for gold sign.
but for SPENDING 1 million, now that another story, and its also available to those who dont find gold making a fun thing to do

Hehe the statistics bugs after a certain amount. I been in the negative #s for quite a while.

it bugs after 246k (and some silver/copper). it has probably to do with the datatype not being upgraded and still being some signed 32 bit integer in stead of unsigned (as you are not supposed to be able to get negative). The reason why i know ... it turned negative above 264k (i had 300k+).

and millionare ... most people would call you ebay-er i'm afraid. Some people view making a huge amount of gold "dirty" or "no lifer" actions.

ps signed means you can store negative and positive numbers, unsigned means you can only store postive numbers. Because you dont store the negative's you have more room for positive numbers with the UNsigned variation.
max unsigned: 4294967296 and max signed: 2147483648 and lowest value -2147483647. the 2147483648 translates to:
214748gold.36silver.48copper -> there you got your max 214748 gold pre cataclysm.

Hehe the statistics bugs after a certain amount. I been in the negative #s for quite a while.

Ya, the number is stored in a 32bit integer (like the old gold system), so once you reach just over 214k it flips to a negative number (since negative was never set up, it displays as -2^31 copper). The number counts down (well, up) until you reach the old gold cap again, at which point it's 0 and begins to count up again. Back in Wrath my primary auction toon looped it like 3 times.. I honestly have no idea how many times he's looped it now lol.

it bugs after 246k (and some silver/copper). it has probably to do with the datatype not being upgraded and still being some signed 32 bit integer in stead of unsigned (as you are not supposed to be able to get negative). The reason why i know ... it turned negative above 264k (i had 300k+).

This was fixed quite recently, it used to go to a negative amount once you went over the old gold cap, but now it happily displays the correct amount.